<template>
  <div style="background-color: lightgreen; padding: 20px">
    <router-link to="/ui_router">UI_Router</router-link>&nbsp;
    <router-link to="/contacts">Contacts</router-link>&nbsp;
    <router-link to="/about">About</router-link>
    <keep-alive>
      <router-view
        style="background-color: skyblue; padding: 20px"
      ></router-view>
    </keep-alive>
  </div>
</template>

<script>
export default {};
</script>

<style>
.router-link-active {
  color: red;
}
</style>